Chapter 2.3, Problem 15SE

Would you use a sample or a census to measure each of the following? Why?

1. a. The model years of the cars driven by each of your five closest friends.
2. b. The model years of the cars driven by each student in your statistics class.
3. c. The model years of the cars driven by each student in your university.
4. d. The model years of the cars driven by each professor whose classes you are taking.